To consume by usage; invest in making use of: as, to expend time, work, or material; the oil of a lamp is expended in burning; water is expended in mechanical operations; the ammunition ended up being entirely expended.

To lay-out; disburse; invest; spend.

To consume by usage; invest in using: because, to expend time, work, or product; the oil of a lamp is expended in burning; water is expended in mechanical functions; the ammunition had been entirely expended.